Autonomous system
AS57643 AIRCITY-NET
Unclassified RIPE
Summary
AirCity
isp residential poland access
The AS handle AIRCITY-NET is held by AirCity Krzysztof Janukowicz.
What it's used for
- The address space carries residential and business internet access, evidenced by reverse DNS entries such as
91-235-21-0.ingate.pland185-174-121-0.ingate.pl. - The network announces 5120 IPv4 addresses across 6 prefixes and maintains 2 observed neighbours, a ratio indicative of an access network providing connectivity to end-users rather than transit.
- Traffic from this AS consists of subscriber eyeballs and local business endpoints within the Poznan region of Poland.
Notable
- Registrants for the announced prefixes include AirCity Krzysztof Janukowicz, Horyzont Technologie Internetowe sp.z.o.o., AXEPRIM TOMASZ KUEHN, and ENTERMA PROSTA S.A., indicating a mix of owned and leased or historically allocated space.
- The inventory consists of six distinct IPv4 blocks, including /22 and /23 prefixes, with no IPv6 prefixes in the inventory.
This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy. Source, and how to suggest an edit.
Interconnection
Peering at a glance
Internet exchanges
No exchange port on file. Many exchanges publish no participant list, so this is not proof of absence.
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-17, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 6 prefixes · 5.12K addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| PL | Poland | 6 |
Registry
Allocation record
- Registry
- RIPE
- Handle
AS57643- Registry name
- AIRCITY-NET
- Registrant
- MNT-AIRCITY
- Abuse contact
- tech@aircity.pl
- Registered
- 2011-12-27
- Last changed
- 2024-02-13
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 67% valid · 4 valid, 2 with no ROA
- ROAs
- 4 authorising AS57643
- ASPA
- no ASPA record
- IRR
- 100% registered · 6 of 6 announcements
- Route objects
- 6 naming AS57643
Reputation
Classification and threat
Unclassified Not in the curated lists. Most of the ~80,000 allocated ASNs are not.
Spamhaus DROP
Not on ASN-DROP The network as a whole is not listed.
No DROP prefixes None of its announced space is on the DROP prefix list.
Spamhaus DROP ("Don't Route Or Peer") lists space and networks run by, or hijacked for, spam and cybercrime operations: 442 networks and 1,783 prefixes, as published 2026-10-17. A short, high-confidence list, so a match is worth taking seriously, and absence from it says little on its own.
FBI IC3
No IC3 indicators Nothing from the FBI IC3 feed.
IC3 threat data is alpha. Absence of an indicator is not evidence of good behaviour, only of absence from this one feed.
Elsewhere